Environmental

Southeys Environmental Management System

Southeys, via its wholly owned subsidiary Sustainable Sand & Stone Ltd, established a substantial facility in Mangere involving new and proprietary equipment for the processing and complete recovery, reuse/repurposing/recycling of clean fill from hydro excavation, bentonite and concrete wash-off in a sustainable and environmentally friendly way.

This facility became operational in June 2022 and the sand and aggregate products it produces are compliant with specifications enabling the mapping to civil engineering and transport projects.

The process removes any organic and metallic contaminants (e.g. disposable gloves, nuts and bolts) and cleans and tightly sizes sand and aggregate into various fractions for reuse.  The silt fraction is repurposed into value added products.  Water is fully recovered and reused for Hydro Excavation, Hydro Jetting and other civil applications.

In addition to the direct benefits of recycling / reuse of clean fill there are many indirect benefits including clean fill diversion, reduced quarrying, reduced sand extraction, reduced disposal and material haulage distances, all contributing to a reduced carbon footprint.

Highlight figures:

• 40,000 tons recycled
• 40,000 tons of land fill diversion
• 22,500 tons of sand and aggregate produced
• 17,500 cubic meters of water recycled